<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>三角形，平行四边形</title>    
      <219970501 蔡尚儒>
	<style type="text/css">
		 body{text-align:center}
	</style>
		</head>
	<body >	 
		 <script type="text/javascript">
		 	var x,y,z,w,q;
		
			 
				for(y=1;y<=5;y++){
					 for(w=1;w<y;w++){
					document.write("&nbsp;&nbsp;"+"*");
					   }
					    document.write("<br>")
				}
				 document.write("三角形") ;
				 document.write("<br>")
               for(z=1;z<=4;z++){
				   for(w=1;w<z;w++){
				 document.write("&nbsp;&nbsp;&nbsp;");
				      }
				   document.write("***********");
				     document.write("<br>")
			   }
			   document.write("平行四边形");
              
                	 
		 </script>
	</body>
</html>
